Product overview A scientifically designed celestial globe that models the celestial axis, meridian, and horizon to demonstrate positions and apparent motion of celestial bodies. The black painted sphere is marked with constellations, coordinate systems, and zodiac information for clear, practical use in teaching, navigation, and study. Key benefits Clear representation of celestial mechanics: A metal shaft through the center serves as the celestial axis, with the sphere able to rotate around that axis to show diurnal motion and relative positions. Accurate coordinate and reference markings: The supporting metal circle functions as the meridian and the horizontal circle in the frame represents the horizon, making it easy to demonstrate celestial coordinate systems and conversions. Complete constellation coverage: The sphere surface is painted with all 88 constellations and their abbreviations, plus zodiac markings and degrees for multiple celestial coordinate systems. Improved visibility when lit: The black sphere offers strong contrast, making constellation patterns and labels more visible under illumination. Durable construction: Metal shaft and metal meridian ring provide stable support for rotation and display. Features and specifications Axis: Metal shaft through the center representing the celestial axis and the poles. Meridian support: Metal circular ring mounting the axis to represent the meridian. Horizon reference: Frame includes a horizontal circle representing the horizon. Surface markings: Eighty eight constellations with abbreviations, twenty four solar terms of the zodiac, and sign and degree markings for several celestial coordinate systems. Visual design: Black painted celestial sphere for enhanced contrast and visibility of markings. Function: Designed as an auxiliary instrument for navigation, astronomy teaching, and science demonstrations. Practical uses and scenarios Classroom demonstration: Use the globe to teach celestial coordinates, illustrate the apparent motion of stars and planets, and practice converting between coordinate systems. Navigation training and orientation: Visualize how celestial poles, meridian, and horizon relate to navigation problems and observational planning. Study and display: Place on a desk or shelf as a reference tool for amateur astronomers, students, or anyone learning constellations and zodiac positions. The contrast surface improves readability under light. Why customers choose this model Faithful physical model of the celestial sphere that supports handson learning and visualization. Complete set of markings for practical astronomical problem solving and coordinate demonstrations. Robust metal components for stable rotation and reliable handling during instruction and study. What to expect A functioning celestial globe with metal axis and meridian, a horizonrepresenting frame, and a black sphere painted with comprehensive constellation and coordinate information. The design supports rotation about the celestial axis and offers strong visual contrast when illuminated for teaching, navigation, and study.